中文
English
One power station needs to build a new substation (called it as: station A), in which the dispatching telephone and telecontrol data services under station A are transmitted to the dispatching center (called it as: station B). Since there is no direct transmission channel between station A and station B, and a station to the nearest substation (called it as: station C) has a fiber optic cable, both station B and station C are in a 622M halo network, and B station& C station have PCM, and the services have been transferred.
In the power dispatching network, the PCM device is mainly responsible for accessing the power service, but its copper cable has a short transmission distance, and generally uses SDH equipment to extend its transmission distance. So in the power dispatch network, PCM is an access device, and SDH is a transmission device. From the above, we can clearly know that the service of the B station has been transferred to the C station, and we only need to transfer the A station service to the C station, and then transmit service telecommunication of A station to the B station through the C station transmit to B station
Solution topology:
Plan description:
ZMUX-200 is a power communication device that combines optical fiber transmission and service access. It is often used for extension of terminal substation in power dispatching network, which can support basic service access such as power dispatching telephone and telecontrol data. It can also be equipped with Ethernet and E1 channels (for video analog data) to meet the needs of current unattended substations or terminal substations.
ZMUX-200 is installed between station A and station C respectively. The existing fiber between station A and station C is directly connected to the optical link interface of ZMUX-200. The dispatching telephone and telecontrol data subscriber line of point A are directly connected to the corresponding interface in ZMUX-200, and transmitted to the C station ZMUX-200 through optical fiber. As mentioned above, one PCM is installed at station B and station C, and the service is working normally. The ultimate goal of the user is to transparently transmit the service of the A station to the B station. Now the A station service has been transmitted to the C station, and the PCM of the C station and the PCM of the A station are used in pairs, and the services are interoperable. At this time, the data interface of the ZMUX-200 of the C station is docked with the data interface corresponding to the PCM of the C station, and the data from the C station can be realized and then enter the PCM of the C station then passed to the PCM on the B station. The service that forms the ZMUX-200 access of the A station finally comes out at the corresponding interface of the PCM device of the B station.
However, it should be noted that the interface type of the PCM device at point C must be consistent with the ZMUX-200. For example, the ZMUX-200 is a telecontrol data interface, and the PCM device also needs a telecontrol data interface. At the same time, it should be noted that each manufacturer's device interface outlet definition is different, and the user line needs to be created according to the correct outlet table.
